CN106271229A - A kind of preparation method of high strength electrode - Google Patents
A kind of preparation method of high strength electrode Download PDFInfo
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- CN106271229A CN106271229A CN201610688035.8A CN201610688035A CN106271229A CN 106271229 A CN106271229 A CN 106271229A CN 201610688035 A CN201610688035 A CN 201610688035A CN 106271229 A CN106271229 A CN 106271229A
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- calcium
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- high strength
- preparation
- strength electrode
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
- B23K35/404—Coated rods; Coated electrodes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3607—Silica or silicates
Abstract
The invention belongs to field of welding material, it is specifically related to the preparation method of a kind of high strength electrode, comprise the steps: that (1) weighs silicate, rare earth fluoride, attapulgite clay, calcium oxalate, sodium pyrosulfite, calcium-silicon, calcium alginate according to weight fraction, titanate, it is dried at temperature is 90 110 DEG C 12 h, is cooled to room temperature；(2) in step (1), crome metal, potassium carbonate and alkali metal oxide are rapidly joined, it is uniformly mixed, raw material after mixing adds the potassium type waterglass of account for raw material gross weight 25%～30%, after stirring, it is coated in outside core wire, suppress through hydraulic press, then dry through high temperature, obtain high strength electrode.The inventive method is simple, low cost, the welding rod welding technological properties of preparation is excellent, arc stability, little, the de-slag of splashing easily, shape careful attractive in appearance, can all-position welding.
Description
Technical field
The invention belongs to field of welding material, be specifically related to the preparation method of a kind of high strength electrode
Background technology
Along with the development of modern industrial technology, rustless steel, with its excellent mechanical performance, corrosion resistance, widely should obtain
With, but its Welding Problems is the most aobvious prominent.During actual welding, the obdurability of welding point and the Strengthening and Toughening water of mother metal
Putting down and there is larger difference, this production cost allowing for product increases, and easily causes security incident.Welding rod is by core wire and coating two
Part is constituted.Welding rod be metal core wire outer by coating (coating) uniformly, centripetally extrusion on core wire.Welding rod kind is different,
Core wire is the most different.The i.e. welding rod of core wire metal-cored, in order to ensure quality and the performance of weld seam, contains metallic element each in core wire
Amount has strict regulation, the particularly content to objectionable impurities (such as sulfur, phosphorus etc.), should have strict restriction, be better than mother metal.
Stainless steel electrode can be divided into straight-chromiun stainless steel welding rod and chromium nickel stainless steel welding rod.Straight-chromiun stainless steel has certain anti-corrosion
(oxidizing acid, organic acid, cavitation erosion) heat-resisting and corrosion resisting property.It is typically chosen as the equipment and materials such as power station, chemical industry, oil.But chromium
Rustless steel generally solderability is poor, it should be noted that welding procedure, heat treatment condition and select suitable welding rod.Chromium nickel is not
Rust steel electrode has good corrosion resistance and non-oxidizability, is widely used in chemical industry, chemical fertilizer, oil, medical machinery manufacture.It is anti-
Only producing due to heating between eyeball and corrode, welding current should not be the biggest.Owing to the resistance value of the core wire of stainless steel electrode compares carbon steel
Greatly, heat conductivity is poorer than carbon steel, and the surface tension of rustless steel molten drop is big, thus its molten drop is short with bulky grain in welding process
Pass by that to cross be main, so along with prolongation and the temperature of weld interval raise, will produce welding technological properties not ideal enough, weld seam
Mechanical performance reduce.At present, there is rubescent, cracking, the technology stability difference of coating etc. in domestic stainless steel electrode the most always
Problem, has a strong impact on welding rod quality, and is forced to abandon the welding rod of remainder and cause waste.
Summary of the invention
For solving the problems referred to above, the present invention provides that a kind of welding technological properties is excellent, arc stability, little, the de-slag of splashing hold
Easily, shape careful attractive in appearance, can all-position welding stainless steel electrode and preparation method thereof.
Specific embodiments of the present invention are: the preparation method of a kind of high strength electrode, comprise the steps:
(1) silicate, rare earth fluoride, attapulgite clay, calcium oxalate, sodium pyrosulfite, silico-calcium are weighed according to weight fraction
Alloy, calcium alginate, titanate, it is dried at temperature is 90-110 DEG C 1-2h, is cooled to room temperature；
(2) in step (1), rapidly join crome metal, potassium carbonate and alkali metal oxide, be uniformly mixed, to mixing
After raw material in add account for raw material gross weight 25%～30% potassium type waterglass, after stirring, be coated in outside core wire, warp
Hydraulic press is suppressed, then dries through high temperature, obtains high strength electrode；
The most each component is counted by weight, consisting of: silicate 10-35 part, rare earth fluoride 3-8 part, attapulgite glues
Soil 5-10 part, calcium oxalate 3-8 part, sodium pyrosulfite 5-10 part, calcium-silicon 2-8 part, crome metal 5-10 part, calcium alginate 1-5
Part, potassium carbonate 3-5 part, alkali metal oxide 3-5 part, titanate surplus.
Further, described silicate content 15-25 part.
Further, described calcium-silicon is by weight: calcium 30-35 part, aluminum 0.5-1.5 part, manganese 1-3 part, barium
0.5-1.5 part, magnesium 0.1-0.5 part, silicon surplus.
Further, described alkali metal oxide is the one in lithium oxide, sodium oxide, potassium oxide.Preferential oxidation potassium
Further, described titanate is rutile.
Specifically, the Baume degrees of described potassium type waterglass is 35.0-36.0.
Specifically, described drying temperature is 330-400 DEG C, and drying temperature retention time is 5-8h.
Beneficial effects of the present invention:
(1) between the various material of the present invention, there is preferable synergism, can effectively suppress the row of hydrogen effusion in molten bath
For, thus improve the sensitivity of weld blowhole.
(2) material is first carried out high temperature drying and anhydrates by the preparation method of the present invention, improves the drying temperature of welding rod, extends height
The temperature retention time of temperature, the potassium type waterglass selecting Baume degrees to be 35.0-36.0, also it is that important technique ensures, can effectively press down
Pharmacy skin is rubescent, ftracture, improve technology stability；And waterglass can combine with wherein silicate component, form space networks
Network structure, adds the yield strength of coating.
(3) the inventive method is simple, low cost, and welding technological properties is excellent, arc stability, splashing slag little, de-are easy, one-tenth
Shape careful attractive in appearance, can all-position welding.
(4) when the method using the present invention prepares high strength electrode, use sodium pyrosulfite, can effectively accelerate it solid
Change intensity and solidification rate.
Detailed description of the invention
Presently in connection with embodiment, the present invention is further detailed explanation.
Embodiment 1
The preparation method of a kind of high strength electrode, comprises the steps:
(1) silicate 15 parts, rare earth fluoride 3 parts, attapulgite clay 5 parts, calcium oxalate 3 are weighed according to above-mentioned weight fraction
Part, sodium pyrosulfite 5 parts, calcium-silicon 4 parts, calcium alginate 1 part, rutile surplus, it is dried at temperature is 100 DEG C
1h, is cooled to room temperature；
(2) in step (1), rapidly join other residue components, be uniformly mixed, the raw material after mixing adds
Account for raw material gross weight 25% potassium type waterglass, the Baume degrees of potassium type waterglass is 35.0, after stirring, is coated in core wire
Outward, suppressing through hydraulic press, then dry through 330 DEG C of high temperature, drying temperature retention time is 5h, obtains high strength electrode；
The most each component is counted by weight, consisting of:
Silicate 15 parts, rare earth fluoride 3 parts, attapulgite clay 5 parts, calcium oxalate 3 parts, sodium pyrosulfite 5 parts, by calcium 30
Part, aluminum 0.5,1 part of manganese, barium 0.5 part, 0.1 part of magnesium, calcium-silicon 4 parts, crome metal 5 parts, calcium alginate 1 part, potassium carbonate 3 parts, oxygen
Change lithium 3 parts, rutile surplus；
Embodiment 2
The preparation method of a kind of high strength electrode, comprises the steps:
(1) silicate 10 parts, rare earth fluoride 5 parts, attapulgite clay 5 parts, calcium oxalate 5 are weighed according to above-mentioned weight fraction
Part, sodium pyrosulfite 7 parts, calcium-silicon 4 parts, calcium alginate 1 part, rutile surplus, it is dried at temperature is 100 DEG C
2h, is cooled to room temperature；
(2) in step (1), rapidly join other residue components, be uniformly mixed, the raw material after mixing adds
Account for raw material gross weight 25% potassium type waterglass, the Baume degrees of potassium type waterglass is 35.0, after stirring, is coated in core wire
Outward, suppressing through hydraulic press, then dry through 350 DEG C of high temperature, drying temperature retention time is 5h, obtains high strength electrode
The most each component is counted by weight, consisting of:
Silicate 10 parts, rare earth fluoride 5 parts, attapulgite clay 5 parts, calcium oxalate 5 parts, sodium pyrosulfite 7 parts, by calcium 33
Part, aluminum 1,1 part of manganese, barium 0.5 part, 0.3 part of magnesium, calcium-silicon 4 parts, crome metal 7 parts, calcium alginate 1 part, potassium carbonate 3 parts, oxidation
Lithium 3 parts, rutile surplus.
Embodiment 3
The preparation method of a kind of high strength electrode, comprises the steps:
(1) silicate 20 parts, rare earth fluoride 5 parts, attapulgite clay 7 parts, calcium oxalate 8 are weighed according to above-mentioned weight fraction
Part, sodium pyrosulfite 8 parts, calcium-silicon 3 parts, calcium alginate 3 parts, rutile surplus, it is dried at temperature is 90 DEG C 2h,
It is cooled to room temperature；
(2) in step (1), rapidly join other residue components, be uniformly mixed, the raw material after mixing adds
Account for raw material gross weight 28% potassium type waterglass, the Baume degrees of potassium type waterglass is 35.0, after stirring, is coated in core wire
Outward, suppressing through hydraulic press, then dry through 380 DEG C of high temperature, drying temperature retention time is 6h, obtains high strength electrode；
The most each component is counted by weight, consisting of:
Silicate 20 parts, rare earth fluoride 5 parts, attapulgite clay 7 parts, calcium oxalate 5 parts, sodium pyrosulfite 8 parts, by calcium 35
Part, aluminum 1.5,2 parts of manganese, barium 1 part, 0.3 part of magnesium, calcium-silicon 3 parts, crome metal 8 parts, calcium alginate 3 parts, potassium carbonate 4 parts, oxidation
4 parts of potassium, rutile surplus.
Embodiment 4
The preparation method of a kind of high strength electrode, comprises the steps:
(1) silicate 20 parts, rare earth fluoride 5 parts, attapulgite clay 7 parts, calcium oxalate 8 are weighed according to above-mentioned weight fraction
Part, sodium pyrosulfite 8 parts, calcium-silicon 6 parts, calcium alginate 3 parts, rutile surplus, it is dried at temperature is 90 DEG C 2h,
It is cooled to room temperature；
(2) in step (1), rapidly join other residue components, be uniformly mixed, the raw material after mixing adds
Account for raw material gross weight 28% potassium type waterglass, the Baume degrees of potassium type waterglass is 36.0, after stirring, is coated in core wire
Outward, suppressing through hydraulic press, then dry through 380 DEG C of high temperature, drying temperature retention time is 6h, obtains high strength electrode；
The most each component is counted by weight, consisting of:
Silicate 25 parts, rare earth fluoride 3 parts, attapulgite clay 7 parts, calcium oxalate 8 parts, sodium pyrosulfite 8 parts, by calcium 30
Part, aluminum 1.5,2 parts of manganese, barium 1 part, 0.5 part of magnesium, calcium-silicon 6 parts, crome metal 8 parts, calcium alginate 3 parts, potassium carbonate 5 parts, oxidation
4 parts of sodium, rutile surplus.
Embodiment 5
The preparation method of a kind of high strength electrode, comprises the steps:
(1) silicate 30 parts, rare earth fluoride 8 parts, attapulgite clay 10 parts, calcium oxalate 8 are weighed according to above-mentioned weight fraction
Part, sodium pyrosulfite 10 parts, calcium-silicon 8 parts, calcium alginate 3 parts, rutile surplus, it is dried at temperature is 90 DEG C
2h, is cooled to room temperature；
(2) in step (1), rapidly join other residue components, be uniformly mixed, the raw material after mixing adds
Account for raw material gross weight 28% potassium type waterglass, the Baume degrees of potassium type waterglass is 36.0, after stirring, is coated in core wire
Outward, suppressing through hydraulic press, then dry through 380 DEG C of high temperature, drying temperature retention time is 7h, obtains high strength electrode；
The most each component is counted by weight, consisting of:
Silicate 30 parts, rare earth fluoride 8 parts, attapulgite clay 10 parts, calcium oxalate 8 parts, sodium pyrosulfite 10 parts, by calcium 35
Part, aluminum 1,3 parts of manganese, barium 1.5 parts, 0.3 part of magnesium, calcium-silicon 8 parts, crome metal 10 parts, calcium alginate 3 parts, potassium carbonate 5 parts, oxygen
Change 5 parts of potassium, rutile surplus.
Embodiment 6
The preparation method of a kind of high strength electrode, comprises the steps:
(1) silicate 35 parts, rare earth fluoride 8 parts, attapulgite clay 8 parts, calcium oxalate 5 are weighed according to above-mentioned weight fraction
Part, sodium pyrosulfite 10 parts, calcium-silicon 2 parts, calcium alginate 5 parts, rutile surplus, it is dried at temperature is 110 DEG C
1h, is cooled to room temperature；
(2) in step (1), rapidly join other residue components, be uniformly mixed, the raw material after mixing adds
Account for raw material gross weight 30% potassium type waterglass, the Baume degrees of potassium type waterglass is 36.0, after stirring, is coated in core wire
Outward, suppressing through hydraulic press, then dry through 400 DEG C of high temperature, drying temperature retention time is 8h, obtains high strength electrode；
The most each component is counted by weight, consisting of:
Silicate 35 parts, rare earth fluoride 8 parts, attapulgite clay 8 parts, calcium oxalate 5 parts, sodium pyrosulfite 10 parts, by calcium 33
Part, aluminum 0.5,2 parts of manganese, barium 0.5 part, 0.3 part of magnesium, calcium-silicon 2 parts, crome metal 10 parts, calcium alginate 5 parts, potassium carbonate 5 parts,
Potassium oxide 3 parts, rutile surplus.
Enforcement performance test:
Deposited metal mechanical property is shown in Table 1 (all tests all perform) according to GB/T983-1995.
Table 1
Rustless steel pitting corrosion test
First, sample being carried out heat treatment, heat treatment temperature is 650 DEG C, and the time is 2h, then, by through Overheating Treatment
The analytically pure FeCl of 120g put into by sample36H2O is dissolved in the solution of 1000ml deionized water preparation, keeps 23 DEG C, 72h.Rotten
Erosion speed is 0.02-0.04g/m2H, and all without spot corrosion.
More than test result indicate that, stainless steel electrode prepared by the present invention, welding usability is excellent, and mechanical property and resistance to
Erosion ability all can meet high requirement.
With the above-mentioned desirable embodiment according to the present invention for enlightenment, by above-mentioned description, relevant staff is complete
Entirely can carry out various change and amendment in the range of without departing from this invention technological thought.The technology of this invention
The content that property scope is not limited in description, it is necessary to determine its technical scope according to right.
Claims (7)
1. the preparation method of a high strength electrode, it is characterised in that comprise the steps:
(1) according to weight fraction weigh silicate, rare earth fluoride, attapulgite clay, calcium oxalate, sodium pyrosulfite, calcium-silicon,
Calcium alginate, titanate, it is dried at temperature is 90-110 DEG C 1-2 h, is cooled to room temperature；
(2) in step (1), rapidly join crome metal, potassium carbonate and alkali metal oxide, be uniformly mixed, after mixing
Raw material adds the potassium type waterglass of account for raw material gross weight 25%～30%, after stirring, is coated in outside core wire, through oil
Press is suppressed, then dries through high temperature, obtains high strength electrode；
The most each component is counted by weight, consisting of: silicate 10-35 part, rare earth fluoride 3-8 part, attapulgite clay 5-
10 parts, calcium oxalate 3-8 part, sodium pyrosulfite 5-10 part, calcium-silicon 2-8 part, crome metal 5-10 part, calcium alginate 1-5 part, carbon
Acid potassium 3-5 part, alkali metal oxide 3-5 part, titanate surplus.
2. by the preparation method of a kind of high strength electrode described in claim 1, it is characterised in that: described silicate content
15-25 part.
3. by the preparation method of a kind of high strength electrode described in claim 1, it is characterised in that: described calcium-silicon is by weight
Amount number is: calcium 30-35 part, aluminum 0.5-1.5 part, manganese 1-3 part, barium 0.5-1.5 part, magnesium 0.1-0.5 part, silicon surplus.
4. by the preparation method of a kind of high strength electrode described in claim 1, it is characterised in that: described alkali metal oxide
For the one in lithium oxide, sodium oxide, potassium oxide.
5. by the preparation method of a kind of high strength electrode described in claim 1, it is characterised in that: described titanate is golden red
Stone.
6. by the preparation method of a kind of high strength electrode described in any one of claim 1-6, it is characterised in that: described potassium type
The Baume degrees of waterglass is 35.0-36.0.
7. by the preparation method of a kind of high strength electrode described in any one of claim 1-6, it is characterised in that: described drying
Temperature is 330-400 DEG C, and drying temperature retention time is 5-8 h.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108465976A (en) * | 2018-04-11 | 2018-08-31 | 丹阳市华龙特钢有限公司 | A kind of crack resistence stainless steel welding stick and preparation method thereof |
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